package Demo523;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Scanner;

public class DeleteDemo {
    private static final String URL = "jdbc:mysql://localhost:3306/userdb";
    private static final String username = "root";
    private static final String password = "123456";

    public static void main(String[] args) throws SQLException, ClassNotFoundException {
        Class.forName("com.mysql.cj.jdbc.Driver");

        Connection connection = DriverManager.getConnection(URL,username,password);

        String sql = "delete from user where id = ?";

        PreparedStatement preparedStatement = connection.prepareStatement(sql);

        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入ID");
        int id = scanner.nextInt();

        preparedStatement.setInt(1,id);

        int i = preparedStatement.executeUpdate();
        if (i>0){
            System.out.println("删除成功");
        }
        else {
            System.out.println("删除失败");
        }
    }
}
